Rotatable Wheel Structure with Polymeric Ring for Movement Limiting
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Solution Overview
Problem
Electronic devices with rotatable members face challenges in limiting movements in horizontal and vertical directions while allowing free rotation, which affects durability and input precision, and existing solutions do not effectively prevent noise and dust from friction during rotation.
Innovation Solution
An electronic device design featuring a ring structure made of polymeric material with protrusions and a hook shape, positioned between the rotatable wheel structure and the housing, to limit movements and prevent friction-related issues by pressing the wheel structure against the housing, thereby enhancing durability and reducing noise and dust accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ring structure is added to limit the movement of the wheel structure, then the durability and input precision are improved, but the device complexity increases
Solution Approach 1:
The ring structure is disposed between the wheel structure and the housing, nesting multiple functional elements within a compact arrangement. The ring structure includes a first extension slot receiving a first protrusion from the housing and a second extension slot receiving a second protrusion from the wheel structure, creating a nested configuration that limits wheel movement while maintaining compactness.
Solution Approach 2:
The ring structure is divided into multiple functional portions: a first portion with a first extension slot that receives a first protrusion from the housing to limit horizontal movement, and a second portion with a second extension slot that receives a second protrusion from the wheel structure to limit vertical movement. This segmentation allows independent control of movement limitations in different directions.
2Ease of operation
If the wheel structure is allowed to rotate freely, then the ease of operation is improved, but noise and dust from friction increase
Solution Approach 1:
The ring structure acts as an intermediary element between the wheel structure and the housing. It includes extension slots that receive protrusions from both the housing and the wheel structure, mediating the interaction between these components. This intermediary configuration allows free rotation while maintaining proper spacing and alignment, thereby reducing friction-induced noise and dust generation.
3Ease of manufacture
If the ring structure is made of polymeric material, then the ease of manufacture is improved, but the strength may be reduced
Solution Approach 1:
The ring structure is formed of a polymeric material that combines manufacturing ease with sufficient structural strength. The polymer material allows for cost-effective production while the engineered geometry of the ring structure, including its extension slots and interaction with protrusions, provides the necessary mechanical strength to effectively limit wheel structure movement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively limits horizontal and vertical movements of the wheel structure, enhances durability, and minimizes noise and dust generation during rotation, improving the overall operational reliability and user experience.
Implementation Method 1
a ring structure formed of a polymeric material... pressing the wheel structure against the housing, thereby enhancing durability
Data Source
AI summary
Various embodiments of the present invention relate to an electronic device and, more specifically, to a rotatable member and an electronic device comprising same. Various embodiments of the present invention may provide a structure for limiting movement of a rotatable member, comprising: a housing; an edge part disposed on one surface of the housing; a wheel structure which is spaced apart from the edge part on the one surface of the housing by a predetermined distance and is rotatably installed along the edge part; and a ring structure, disposed in a space formed between the wheel structure and the edge part, for coupling the wheel structure and the edge part to each other, wherein at least a part of the ring structure is supported by the wheel structure so that the horizontal movement of the ring structure is limited, and at least a part of the ring structure has a hook and is supported by the edge part so that the wheel structure is pressed toward the housing due to the bending of the ring structure.